“Therefore Christ, alongside of the outward preaching of His Gospel, has also commanded and instituted these two, namely, outward baptism and the supper to carry on and preserve the outward, pure, holy assembly. And if the matter be seen in its true light, we must say that three things are necessary to the economy of a Christian assembly, namely, true preaching of the Gospel, true baptism, and a true keeping of the Lord’s Supper. Where these are not carried on, or where one of them is lacking, it is not possible for a genuine, pure Christian assembly to stand and maintain an outward testimony. “… in order that the outward assembly of God may be gathered, begun and upheld there must be the preaching of the true and wholesome Gospel.”